Oil field hydraulic control multi-switching circulating valve and opening and closing tools

A switching cycle, hydraulic technology, applied in wellbore/well valve device, wellbore/well components, earth-moving drilling, etc., can solve the problems of high operating cost and low reliability of valve switching

Active Publication Date: 2015-07-22
KARAMAY TELONG PETROLEUM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the multiple switching cycle valves commonly used in oil fields are opened or closed by means of steel wire carrying tools by vibration. Since the vibration force is very small, the reliability of the valve switch is very low.
In addition, the traditional circulation valve uses coiled tubing to switch, and the operating cost is too high

Method used

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  • Oil field hydraulic control multi-switching circulating valve and opening and closing tools
  • Oil field hydraulic control multi-switching circulating valve and opening and closing tools
  • Oil field hydraulic control multi-switching circulating valve and opening and closing tools

Examples

Experimental program
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Embodiment Construction

[0019] An oil field hydraulic control multiple switch cycle valve, such as figure 1 , figure 2 As shown, including the sliding sleeve 5, four sliding sleeve circulation holes 17 are evenly distributed in the radial direction on the outer peripheral wall of the lower part of the sliding sleeve 5, and the inner annular shoulder 4 is arranged in the upper part of the sliding sleeve 5, and the inner annular shoulder 4 is arranged in the sliding sleeve. The upper and lower casings 1, 9 connected by threads; the outer wall of the middle part of the upper casing 1 is provided with an upper annular shoulder 2 outside the inner annular shoulder, and the diameter of the upper casing at the lower side of the upper annular shoulder 2 On the outer peripheral wall, four upper liquid inlet holes 3 are uniformly distributed in the radial direction, and the upper end of the lower casing 9 and the outer peripheral wall in the middle are respectively provided with a ring-shaped retaining should...

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Abstract

The invention discloses an oil field hydraulic control multi-switching circulating valve, an opening tool sleeved with an upper casing of the circulating valve in a matched mode and used for opening the circulating valve and a special closing tool. The circulating valve comprises a sliding sleeve. Inner annular retaining shoulders are arranged in the upper portion of the sliding sleeve, and an upper piston cavity, a middle piston cavity and a lower piston cavity are formed among annular retaining shoulders of the upper casing and a lower casing in the sliding sleeve and the inner annular retaining shoulders of the sliding sleeve. The opening tool and the closing tool are located on the conical surface in the upper end of the lower casing, upper liquid inlets of the upper casing are closed through the opening tool via pump fluid, high-pressure liquid is guided into the middle piston cavity through the opening tool, the circulating valve is opened, lower liquid inlets are closed through the closing tool via the pump fluid, the high-pressure liquid is guided into the upper piston cavity, and the circulating valve is closed.

Description

technical field [0001] The invention relates to an oil field hydraulically controlled multiple-time on-off cycle valve and corresponding special opening and closing tools. Background technique [0002] At present, the multiple on-off cycle valves commonly used in oil fields are opened or closed by means of a steel wire carrying tool by vibration. Since the vibration force is very small, the reliability of the valve switch is very low. In addition, the traditional circulation valve is operated by coiled tubing to switch, and the operation cost is too high. Contents of the invention [0003] The object of the present invention is to provide an oil field hydraulic control cycle valve that can be opened and closed multiple times without using tool shocks to open and close the cycle valve, and the cycle valve has high reliability of switching. [0004] Another object of the present invention is to provide a special circulation valve opening tool and a corresponding closing too...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B34/14
CPCE21B34/14E21B2200/06
Inventor 毛万里王彦武
Owner KARAMAY TELONG PETROLEUM TECH CO LTD
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